Test D15 - KOEO Code 15

NOTE: Perform this CIRCUIT TEST when directed by other test procedures.

Fig 1: EEC Power Relay Circuit

Continuous Memory Code 15 Displayed. Clear Continuous Memory Codes using procedure outlined in DIAGNOSIS & TESTING. Repeat KOEO SELF-TEST through Continuous Memory Code output. If continuous Code 15 is not displayed, continuous Code 15 testing is complete. If Continuous Memory Code 15 is displayed during retest, go to next step.
NOTE: Continuous Memory Code 15 may be displayed when power to Keep Alive Memory (KAM) test pin No. 1 at ECA is interrupted. This code may be set when installing a breakout box. Code 15 may also be displayed the first time SELF-TEST is performed and power is restored to ECA. Repeat SELF-TEST to ensure correct diagnosis.
Engine Compartment Wire Routing. Ensure that EEC components and wiring are not close to high tension secondary voltage wires or ignition components. If EEC wiring is close to high tension wires, reroute EEC wiring. Repeat QUICK TEST. If Continuous Memory Code 15 is no longer displayed, Continuous Memory Code 15 testing is complete. If Continuous Memory Code 15 is still displayed, go to next step.
Checking Power Circuit For Keep Alive Memory (KAM). Turn key off and wait 10 seconds. Disconnect ECA 60-pin connector and inspect for damaged pins and loose wires. Service as necessary. Install breakout box, leaving ECA disconnected. Set DVOM on 20-volt scale. Connect DVOM positive test lead to test pin No. 1 and negative test lead to pins No. 40 or 60 at the breakout box. Turn key on and observe voltage reading. If reading is less than 10.5 volts, repair open circuit. Repeat QUICK TEST. If reading is 10.5 volts or more, replace ECA and repeat QUICK TEST.